Ecoregions of the Conterminous United States: Evolution of a Hierarchical Spatial Framework

Environmental Management

Volumn 54, Issue 6, 2014, Pages 1249-1266

  Omernik, James M ^a   Griffith, Glenn E ^a  

^a U S GEOLOGICAL SURVEY   (United States)

Author keywords

Ecoregions; Ecosystem management; North America; Regionalization; Spatial frameworks; United States

Indexed keywords

ECOREGIONS; ECOSYSTEM MANAGEMENT; NORTH AMERICA; REGIONALIZATION; SPATIAL FRAMEWORK; UNITED STATES;

ECOLOGY;

ECOREGION; HIERARCHICAL SYSTEM; MAPPING; REGIONAL PLANNING; RESOURCE ASSESSMENT; SPATIAL ANALYSIS;

ARTICLE; BIOGEOGRAPHIC REGION; CANADA; CONTROLLED STUDY; ENVIRONMENTAL MANAGEMENT; EVOLUTION; HUMAN; MEXICO; NORTH AMERICA; RESOURCE MANAGEMENT; UNITED STATES; WATER QUALITY; BIODIVERSITY; ECOLOGY; ECOSYSTEM; ENVIRONMENTAL PROTECTION; GEOGRAPHIC MAPPING; GEOGRAPHY; PROCEDURES;

UNITED STATES;

BIODIVERSITY; CANADA; CONSERVATION OF NATURAL RESOURCES; ECOLOGY; ECOSYSTEM; GEOGRAPHIC MAPPING; GEOGRAPHY; MEXICO; UNITED STATES;

EID: 84911408592     PISSN: 0364152X     EISSN: 14321009     Source Type: Journal    
DOI: 10.1007/s00267-014-0364-1     Document Type: Article

References (115)

1. Alabama Department of Conservation and Natural Resources (2005) Alabama Comprehensive Wildlife Conservation Strategy. http://www.outdooralabama.com/research-mgmt/cwcs/outline.cfm. Accessed 30 Dec 2013
2. Allen TFH, Hoekstra TW (1994) Toward a definition of sustainability. In: Sustainable Ecological Ecosystems: Implementing an Ecological Approach to Land Management. USDA Forest Service, General Technical Report, RM-247, pp 98–108
3. Anderson JE (ed) (2006) Arkansas Wildlife Action Plan. Arkansas Game and Fish Commission, Little Rock, 2028 pp. http://www.wildlifearkansas.com/strategy.html. Accessed 8 Sept 2014
4. Arizona State Forestry Division (2010) Arizona Forest Resource Strategy. Arizona State Forestry Division, Phoenix, 106 pp. https://azsf.az.gov/arizona-forest-resource-strategy-2010. Accessed 8 Sept 2014
5. Arnwine DH, Denton GM (2001a) Development of regionally based numeric interpretations of Tennessee’s narrative biological integrity criterion. Tennessee Department of Environment and Conservation, Nashville, 124 pp
6. Arnwine DH, Denton GM (2001b) Habitat Quality of least-impacted streams in Tennessee. Tennessee Department of Environment and Conservation, Nashville, 60 pp
7. Auch RF, Napton DE, Taylor JL, Brooks MS (2011) Ecoregional differences in late-20th–century land-use and land-cover change in the U.S. Northern Great Plains. Gt Plains Res 21 (Fall 2011):231–43
8. Auch RF, Laingen C, Drummond MA, Sayler KL, Reker RR, Bouchard MA, Danielson JJ (2013) Land-use and land-cover change in three corn belt ecoregions—similarities and differences. Focus on Geogr 56(4):135–143. doi:10.1111/foge.12022
9. Bailey RG (1983) Delineation of ecosystem regions. Environ Manag 7(4):365–373. doi:10.1007/BF01866919
10. Bailey RG (1996) Ecosystem geography. Springer, New York, 204 pp
11. Bailey RG (2004) Identifying ecoregion boundaries. Environ Manag 34(Suppl. 1):S14–S26. doi:10.1007/s00267-003-0163-6
12. Bailey RG, Avers PE, King T, McNab WH (eds) (1994) Ecoregions and subregions of the United States (map) (supplementary table of map unit descriptions compiled and edited by McNab, WH, and Bailey, RG). U.S. Department of Agriculture-Forest Service, Washington, DC. scale 1:7,500,000
13. Barnes CA, Roy DP, Loveland TR (2013) Projected surface radiative forcing due to 2000–2050 land-cover land-use albedo change over the eastern United States. J Land Use Sci 8(4):369–382. doi:10.1080/1747423X.2012.667453
14. Blew RD (1996) On the definition of ecosystems. Bull Ecol Soc Am 77:171–173
15. Brown DG, Johnson KM, Loveland TR, Theobald DM (2005) Rural land-use trends in the conterminous United States, 1950–2000. Ecol Appl 15:1851–1863. doi:10.1890/03-5220
16. Bryce SA, Omernik JM, Larsen DP (1999) Ecoregions: a geographic framework to guide risk characterization and ecosystem management. Environ Pract 1(3):141–155
17. Callicott JB (1994) A brief history of American conservation philosophy. In: Sustainable Ecological Systems: Implementing an Ecological Approach to Land Management. USDA Forest Service, General Technical Report, RM-247, p 10–14
18. Callicott JB (1995) A review of some problems with the concept of ecosystem health. Ecosyst Health 1:101–112
19. Campbell JJN (1996) The big picture—ecological regions of Kentucky. Kentucky News, The Nature Conservancy, p 14–15 (continues over several issues)
20. CEC and TNC (2005) North American central grasslands priority conservation areas: technical report and documentation. In: Karl JW, Hoth J (eds) Commission for Environmental Cooperation and The Nature Conservancy, Montreal
21. Christensen NL, Bartuska AM, Brown JH, Carpenter S, D’Antonio C, Francis R, Franklin JF, MacMahon JA, Noss RF, Parsons DJ, Peterson CH, Turner MG, Woodmansee RG (1996) The report of the Ecological Society of America Committee on the scientific basis for ecosystem management. Ecol Appl 6(3):665–691. http://www.jstor.org/stable/2269460
22. Clarke SE, White D, Schaedel AL (1991) Oregon, USA, ecological regions and subregions for water quality management. Environ Manag 15(6):847–856. doi:10.1007/BF02394822
23. Cleland DT, Freeouf JA, Keys JE, Nowacki GJ, Carpenter C, McNab WH (2007) Ecological subregions—sections and subsections of the conterminous United States. General Technical Report WO-76. U.S. Department of Agriculture–Forest Service, Washington, DC. scale 1:3,500,000
24. Coles JF, McMahon G, Bell AH, Brown LR, Fitzpatrick FA, Scudder Eikenberry BC, Woodside MD, Cuffney TF, Bryant WL, Cappiella K, Fraley-McNeal L, Stack WP (2012) Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States. U.S. Geological Survey Circular 138. U.S. Geological Survey, Reston, 138 pp. http://pubs.usgs.gov/circ/1373/
25. Commission for Environmental Cooperation (1997) Ecological regions of North America: toward a common perspective. Commission for Environmental Cooperation, Montreal, 71 pp (map updated 2006)
26. Corn ML (1993) Ecosystems, biomes, and watersheds: definitions and use. Congressional Research Service, Report to Congress, 93-655 ENR. Library of Congress, Washington, DC
27. Daily GC (ed) (1997) Nature’s services: societal dependence on natural ecosystems. Island Press, Washington, DC, 392 pp
28. Davis WS, Snyder BD, Stribling JB, Stoughton C (1996) Summary of state biological assessment programs for streams and wadeable rivers. EPA 230-R-96-007. U.S. Environmental Protection Agency, Office of Policy, Planning, and Evaluation. Washington, DC
29. Diamond JM (2005) Collapse: how societies chose to fail or succeed. Penguin Group, New York, 575 pp
30. DiBiase D, DeMers M, Johnson A, Kemp K, Luck AT, Plewe B, Wentz E (eds) (2006) Geographic information science and technology body of knowledge. Association of American Geographers, Washington, DC
31. Drummond MA, Loveland TR (2010) Land-use pressure and a transition to forest-cover loss in the eastern United States. Bioscience 60(4):286–298. doi:10.1525/bio.2010.60.4.7
32. Drummond MA, Auch RF, Karstensen KA, Sayler KL, Taylor JL, Loveland TR (2012) Land change variability and human-environment dynamics in the United States Great Plains. Land Use Policy 29:710–723. doi:10.1016/j.landusepol.2011.11.007
33. Edwards L, Ambrose J, Kirkman L (2013) The natural communities of Georgia. University of Georgia Press, Athens, 675 pp
34. Ellis EC, Ramankutty N (2008) Putting people in the map: anthropogenic biomes of the world. Front Ecol Environ 6:439–447. doi:10.1890/070062
35. Fandrei G, Mockovak C, Reetz G (1986) Protecting Minnesota’s waters: the land-use connection. Minnesota Pollution Control Agency, St. Paul, 29 pp
36. Farrar J (2004) Birding Nebraska. NEBRASKAland Magazine 82(1):1–178
37. Fitzsimmons AK (1996) Sound policy or smoke and mirrors: does ecosystem management make sense? Water Resour Bull 32:217–227
38. Gallant AL, Loveland TR, Sohl T, Napton D (2004) Using a geographic framework for analyzing land cover issues. Environ Manag 34(S1):89–110
39. Georgia Department of Natural Resources (2005) A Comprehensive Wildlife Conservation Strategy for Georgia. GA DNR Wildlife Resources Division. http://www.georgiawildlife.com/SWAPSummary. Accessed 3 Jan 2014
40. Gober P (2000) In search of synthesis. Ann Assoc Am Geogr 90(1):1–11. doi:10.1111/0004-5608.00181
41. Gonzalez OJ (1996) Formulating an ecosystem approach to environmental protection. Environ Manag 20(5):597–605. doi:10.1007/BF01204133
42. Griffith, GE, Omernik JM. Pierson SM, Kiilsgaard CW (1994a) Massachusetts ecological regions project. EPA/600/A-94/111. U.S. Environmental Protection Agency, Environmental Research Laboratory, Corvallis, 58 pp
43. Griffith GE, Omernik JM, Wilton TF, Pierson SM (1994b) Ecoregions and subregions of Iowa: a framework for water quality assessment and management. J Iowa Acad Sci 101(1):5–13
44. Groffman PM, Cavender-Bares J, Bettez ND, Grove JM, Hall SJ et al (2014) Ecological homogenization of urban USA. Front Ecol Environ 12(1):74–81. doi:10.1890/120374
45. Haber W (2011) An ecosystem view into the twenty-first century. Chapter 18. In: Schwarz A, Jax K (eds) Ecology revisited—reflecting on concepts advancing science. Springer, Netherlands, p 215–227. doi:10.1007/978-90-481-9744-6_18
46. Haggett P (1975) Geography: a modern synthesis. Harper and Row, New York
47. Hargrove WW, Hoffman FM (2004) Potential for multivariate quantitative methods for delineation and visualization of ecoregions. Environ Manag 34(Suppl. 1):S39–S60. doi:10.1007/s00267-003-1084-0
48. Hart JF (1982) The highest form of the geographer’s art. Ann Assoc Am Geogr 72:1–29. doi:10.1111/j.1467-8306.1982.tb01380.x
49. Hartshorne R (1939) The nature of geography: a critical survey of current thought in light of the past. Assoc Am Geogr, 504 pp (reprinted 1961)
50. Heiskary SA, Lindon M (2010) Minnesota national lakes assessment: an overview of water chemistry in Minnesota lakes. Minnesota Pollution Control Agency, Saint Paul, 55 pp
51. Heiskary SA, Wilson CB (1989) The regional nature of lake water quality across Minnesota: an analysis for improving resource management. J Minn Acad Sci 55:71–77
52. Heiskary SA, Wilson CB (2008) Minnesota’s approach to lake nutrient criteria development. Lake Reserv Manag 24:283–297
53. Hooke RL, Martin-Duque JF, Pedraza J (2012) Land transformation by humans: a review. GSA Today 22(12):4–10. doi:10.1130/GSAT151A.1
54. Hoos AB, McMahon G (2009) Spatial analysis of instream nitrogen loads and factors controlling nitrogen delivery to streams in the southeastern United States using spatially referenced regression on watershed attributes (SPARROW) and regional classification frameworks. Hydrol Processes 23(16):2275–2284. doi:10.1002/hyp.7323
55. Hornig CE, Bayer CW, Twidwell SR, Davis JR, Kleinsasser RJ, Linam GW, Mayes KB (1995) Development of regionally based biological criteria in Texas. In: Davis WS, Simon TP (eds) Biological assessment and criteria: tools for water resource planning and decision making. Lewis Publishing, Boca Raton, pp 145–152
56. Iowa Department of Natural Resources (2001) Iowa’s water ambient monitoring program: rivers—regional patterns in historical data. Water Fact Sheet 2001-6. Iowa Department of Natural Resources, Iowa, 4 pp. ftp.igsb.uiowa.edu/igspubs/pdf/WFS-2001-06.pdf. Accessed 4 Feb 2014
57. Jax K (2006) Ecological units: definitions and application. Q Rev Biol 81(3): 237–258. http://www.jstor.org/stable/10.1086/506237
58. Kay JK, Schneider E (1994) Embracing complexity: the challenge of the ecosystem approach. Alternatives 20:32–39
59. Kentucky Department of Fish and Wildlife Resources (2013) Kentucky’s Comprehensive Wildlife Conservation Strategy. Frankfort, http://fw.ky.gov/WAP/Pages/Wildlife-Action-Plan-Full.aspx. Accessed 30 Dec 2013
60. Lackey RT (1999) Radically contested assertions in ecosystem management. J Sustain For 9(1–2):21–34. doi:10.1300/J091v09n01_02
61. Larsen DP, Dudley DR, Hughes RM (1988) A regional approach for assessing attainable surface water quality: Ohio as a case study. J Soil Water Conserv 43(2):171–176
62. Likens GE (1993) Preface. In: McDonnell MJ, Pickett TA (eds) Humans as components of ecosystems: the ecology of subtle human effects and populated areas. Springer-Verlag, New York
63. Longley P, Goodchild MF, Maguire D, Rand D (2011) Geographic information systems and science, 3rd edn. Wiley, Hoboken
64. Loveland TR, Merchant JM (2004) Ecoregions and ecoregionalization: geographical and ecological perspectives. Environ Manag 34(Suppl. 1):S1–S13. doi:10.1007/s00267-003-5181-x
65. Marin VH (1997) General system theory and the ecological concept. Bull Ecol Soc Am 77:102–104
66. McMahon G, Gregonis SM, Waltman SW, Omernik JM, Thorson TD, Freeouf JA, Rorick AH, Keys JE (2001) Developing a spatial framework of common ecological regions for the conterminous United States. Environ Manag 28(3):293–316. doi:10.1007/s0026702429
67. McMahon G, Wiken EB, Gauthier DA (2004) Toward a scientifically rigorous basis for developing mapped ecological regions. Environ Manag 34(Suppl. 1):S111–S124. doi:10.1007/s00267-004-0170-2
68. Napton DE, Auch RF, Headley R, Taylor JL (2010) Land changes and their driving forces in the Southeastern United States. Reg Environ Change 10(1):37–53. doi:10.1007/s10113-009-0084-x
69. Olmanson LG, Brezonik PL, Bauer ME (2014) Geospatial and temporal analysis of a 20-year record of Landsat-based water clarity in Minnesota’s 10,000 lakes. J Am Water Resour Associ 50(3):1–14. doi:10.1111/jawr.12138
70. Olson DM, Dinerstein E, Wikramanayake ED, Burgess ND et al (2001) Terrestrial ecoregions of the world: a new map of life on earth. Bioscience 51(11):933–938
71. Olstad TA (2012) Understanding the science and art of ecoregionalization. Prof Geogr 64(2):303–308. doi:10.1080/00330124.2011.603656
72. Omernik JM (1977) Nonpoint source stream nutrient level relationships: a nationwide study. EPA/600/3-77/105. U.S. EPA, Environmental Research Laboratory, Corvallis, 151 pp
73. Omernik JM (1987) Ecoregions of the conterminous United States. Ann Assoc Am Geogr 77(1):118–125. doi:10.1111/j.1467-8306.1987.tb00149.x
74. Omernik JM (1995) Ecoregions: a spatial framework for environmental management. In: Davis WS, Simon TP (eds) Biological assessment and criteria: tools for water resource planning and decision making. Lewis Publishing, Boca Raton, pp 49–62
75. Omernik JM (2004) Perspectives on the nature and definition of ecological regions. Environ Manag 34(Suppl. 1):S27–S38. doi:10.1007/s00267-003-5197-2
76. Omernik JM, Griffith GE (1991) Ecological regions vs. hydrologic units: a framework for managing water quality. J Soil Water Conserv 46(5):334–340
77. Omernik JM, Powers C (1983) Total alkalinity of surface waters—a national map. Ann Assoc Am Geogr 73(1):133–135. doi:10.1111/j.1467-8306.1983.tb01400.x
78. Omernik JM, Griffith GE, Irish JT, Johnson CB (1988) Total alkalinity of surface water a: a national map. U.S. Environmental Protection Agency, Corvallis Environmental Research Laboratory, Corvallis. ftp.epa.gov/wed/ecoregions/phos_alk/us_alk_f2pdf
79. Omernik JM, Paulsen SG, Weber MH, Griffith GE. (In Review) Regional patterns of total nitrogen concentrations in the National Rivers and Streams Assessment. Submitted to J Soil Water Conserv
80. Oregon Department of Fish and Wildlife (2006) Oregon Conservation Strategy. Oregon Department of Fish and Wildlife, Salem. http://www.dfw.state.or.us/conservationstrategy/contents.asp#eco. Accessed 30 Dec 2013
81. Orr D (2012) Security by design. Solutions 3(1) http://www.thesolutionsjournal.com/node/1041. Accessed 5 Dec 2013
82. Pardo LH, Robin-Abbott MJ, Driscoll CT (eds) (2011) Assessment of nitrogen deposition effects and empirical critical loads of nitrogen for ecoregions of the United States. General Technical Report NRS-80. USDA Forest Service, Northern Research Station, Newtown Square, 291 pp
83. Rohm CM, Giese JW, Bennett CC (1987) Evaluation of an aquatic ecoregion classification of streams in Arkansas. J Freshwater Ecology 4(1):127–140
84. Rowe JS (1997) Defining the ecosystem. Bull Ecol Soc Am 78:95–97
85. Rowe JS, Barnes BV (1994) Geo-ecosystems and bio-ecosystems. Bull Ecol Soc Am 75:40–41
86. Sanderson EW, Jaiteh M, Levy MA, Redford KH, Wannebo AV, Woolmer G (2002) The human footprint and the last of the wild. Bioscience 52(10):891–904
87. Schneider TM, Beaton G, Keyes TS, Klaus NA (eds) (2010) The breeding bird atlas of Georgia. University of Georgia Press, Athens, 497 pp
88. Sheifer IC (1996) Integrating the human dimension in ecoregion/ecosystem studies—a view from the ecosystem management national assessment effort. Bull Ecol Soc Am 77(3):177–180. http://www.jstor.org/stable/20168069
89. Sleeter BM, Wilson TS, Soulard CE, Liu J (2011) Estimation of late twentieth century land-cover change in California. Environ Monit Assess 173(1–4):251–266. doi:10.1007/s10661-010-1385-8
90. Sleeter BM, Sohl TL, Bouchard MA, Reker RR, Soulard CE, Acevedo W, Griffith GE, Sleeter RR, Auch RF, Sayler KL, Prisley S, Zhu Z (2012) Scenarios of land use and land-cover change in the conterminous United States: utilizing the special report on emission scenarios at ecoregional scales. Glob Environ Change 22(4):896–914. doi:10.1016/j.gloenvcha.2012.03.008
91. Sleeter BM, Sohl TL, Loveland TR, Auch RF, Acevedo W, Drummond MA, Sayler KL, Stehman SV (2013) Land-cover change in the conterminous United States from 1973 to 2000. Glob Environ Change 23(4):733–748. doi:10.1016/j.gloenvcha.2013.03.006
92. Stoddard JL (2004) Use of ecological regions in aquatic assessments of ecological condition. Environ Manag 34(Suppl. 1):S61–S70. doi:10.1007/s00267-003-0193-0
93. Terziotti S, McMahon G (2012) Representation of regional urban development conditions using a watershed-based gradient study design. U.S. Geological Survey Scientific Investigations Report 2012-5070, p 109. http://pubs.usgs.gov/sir/2012/5070/
94. Terziotti S, Hoos AB, Harned DA, Garcia AM (2010) Mapping watershed potential to contribute phosphorus from geologic materials to receiving streams, southeastern United States. U.S. Geological Survey Scientific Investigations Map 3102, 1 sheet
95. Theobold DM (2005) Landscape patterns of exurban growth in the USA from 1980 to 2020. Ecol Soc 10(1):32. http://www.ecologyandsociety.org/vol10/iss1/art32/
96. Trimble S (1989) The sagebrush ocean. University of Nevada Press, Reno, 248 pp
97. U.S. Department of Agriculture–Natural Resources Conservation Service (2006) Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. Agriculture Handbook 296, U.S. Government Printing Office, Washington, DC, 669 pp + map
98. U.S. Environmental Protection Agency (1986) Arkansas’ ecoregion program. Water Quality Highlights. U.S. Environmental Protection Agency, Office of Water, Washington, DC, 2 pp
99. U.S. Environmental Protection Agency (1988) Minnesota’s nonpoint source assessment program. Water Quality Highlights. U.S. Environmental Protection Agency, Office of Water. Washington, DC, 2 pp
100. U.S. Environmental Protection Agency (2006) Wadeable streams assessment. EPA-841-R-09-001. U.S. Environmental Protection Agency, Office of Research and Development, Washington, DC, 98 pp
101. U.S. Environmental Protection Agency (2009) National lakes assessment: a collaborative survey of the Nation’s lakes. EPA 841-R-09-001. U.S. Environmental Protection Agency, Office of Water and Research and Development, Washington, DC, 102 pp
102. U.S. Environmental Protection Agency (2013a) Ecoregions of North America. http://www.epa.gov/wed/pages/ecoregions/na_eco.htm. Accessed 2 Dec 2013
103. U.S. Environmental Protection Agency (2013b) National rivers and streams assessment 2008-2009: a collaborative survey (DRAFT). EPA/841/D-13/001. U.S. Environmental Protection Agency, Office of Research and Development, Washington, DC, p 110. http://water.epa.gov/type/rsl/monitoring/riverssurvey/upload/NRSA0809_Report_Final_508Compliant_130228.pdf. Accessed 26 Jan 2014
104. U.S. Geological Survey (1970) The national atlas of the United States of America. U.S. Geological Survey, Washington, DC, 417 pp
105. U.S. General Accounting Office (1994) Ecosystem management: additional actions needed to test a promising approach. Report to Congressional Requestors. GAO/RCED-94-111. U.S. General Accounting Office, Washington, DC, 87 pp
106. U.S. North American Bird Conservation Initiative Committee (2000) North American bird conservation initiative. U.S. Fish and Wildlife Service, Arlington, VA. http://www.nabci-us.org/bcrs.htm. Accessed 8 Dec 2013
107. Vitousek PM, Mooney HA, Lubchenco J, Melillo JM (1997) Human domination of Earth’s ecosystems. Science 277:494–499. doi:10.1126/science.277.5325.494
108. Wiken EB (1986) Terrestrial ecozones of Canada. Ecological land classification. Series No. 19. Environment Canada, Hull
109. Wiken E, Jimenez Nava F, Griffith G (2011) North American terrestrial ecoregions—Level III. Commission for Environmental Cooperation, Montreal, Canada, 149 pp. ftp.epa.gov/wed/ecoregions/pubs/NA_TerrestrialEcoregionsLevel3_Final-2june11_CEC.pdf. Accessed 20 Nov 2013
110. Wildlife Action Plan Team (2012) Nevada Wildlife Action Plan. Nevada Department of Wildlife, Reno. http://www.ndow.org/Nevada_Wildlife/Conservation/Nevada_Wildlife_Action_Plan/. Accessed 6 Jan 2014
111. Willis AJ (1997) The ecosystem: an evolving concept viewed historically. Funct Ecol 11:268–271. doi:10.1111/j.1365-2435.1997.00081.x
112. Woods AJ, Omernik JM, Martin WH, Pond GJ, Andrews WM, Call SM, Comstock JA, Taylor DD (2002) Ecoregions of Kentucky (color poster with map, descriptive text, summary tables, and photographs), U.S. Geological Survey, Reston. http://www.epa.gov/wed/pages/ecoregions/ky_eco.htm
113. Yoder CO, Rankin ET (1995) Biological criteria program development and implementation in Ohio. In: Davis WS, Simon TP (eds) Biological assessment and criteria: tools for water resource planning and decision making. Lewis Publishing, Boca Raton, pp 109–144
114. Yoder CO, Rankin ET (1998) The role of biological indicators in a state water quality management process. Environ Monit Assess 51:61–88. doi:10.1023/A:1005937927108
115. Zhu Z, Reed BC (eds) (2012) Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States. U.S. Geological Survey Professional Paper 1797, 192 pp. http://pubs.usgs.gov/pp/1797/